US20140034463A1 - Tap changer and vacuum interrupter for a tap changer of this kind - Google Patents
Tap changer and vacuum interrupter for a tap changer of this kind Download PDFInfo
- Publication number
- US20140034463A1 US20140034463A1 US13/878,059 US201113878059A US2014034463A1 US 20140034463 A1 US20140034463 A1 US 20140034463A1 US 201113878059 A US201113878059 A US 201113878059A US 2014034463 A1 US2014034463 A1 US 2014034463A1
- Authority
- US
- United States
- Prior art keywords
- contact
- vacuum switching
- vacuum
- load
- movable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H2033/6668—Operating arrangements with a plurality of interruptible circuit paths in single vacuum chamber
Definitions
- the invention relates to a tap changer with vacuum switching tubes for uninterrupted switching over between winding taps of a tapped transformer.
- the invention further relates to a novel vacuum switching tube particularly suitable for such a tap changer.
- a tap changer having in total four vacuum switching tubes per phase is known from DE 20 21 575.
- a respective vacuum switching tube as main contact and a respective further vacuum switching tube, in series connection with a switch-over resistance, as resistance contact.
- a further tap changer in which further mechanical switch elements are additionally provided between the electrical connection of the two vacuum switching tubes of each load branch and the load diverter is described in DE 10 2009 048 813 that is not prior published.
- the known tap changer requires four separate vacuum switching tubes per phase.
- the large amount of space required for these vacuum switching tubes themselves, as well as the associated actuated mechanism is disadvantageous.
- due to the high component outlay such known constructions are relatively expensive.
- the tap changer according to the invention is based on the general idea of respectively combining the main contact in one load branch and the resistance contact in the other load branch to form a single vacuum switching tube.
- the vacuum switching tube according to the invention is based on the general idea of combining the functionality of two tubes in a tap changer through the combination of a constructional form of a tube with only one movable contact system and two alternative—depending on the type of changeover switch—contactable fixed contacts.
- the novel vacuum switching tube is of simple construction; it does not have, in particular, any internally located contact compression springs or slide contacts.
- Particularly advantageous in the case of the vacuum switching tube according to the invention is the single movable contact system that occupies less space and requires only a simple actuating mechanism.
- Vacuum switching tubes with two contact locations are already known per se.
- DE 333443767 relates to a vacuum switching tube with two contact pairs, which are electrically connected in series, in a single vacuum space, the contact pairs being actuatable simultaneously.
- DE 197 56 308 C1 relates to a similar vacuum switching tube with two switch paths arranged on a common axis, wherein internally disposed contact compression springs are provided.
- EP 0 258 614 B1 describes the combination of a vacuum switching tube and a specific electrical connection with a tap changer. In this case, several switching paths are arranged in one is vacuum space, which causes a complicated construction of the vacuum switching tube with annular fixed contacts.
- DE 10 2006 033 B3 describes a further vacuum switching tube with a multiple functionality, wherein here, too, not only annular fixed contacts, but also internally disposed contact pressure springs are required.
- FIG. 1 shows a tap changer according to the prior art
- FIG. 2 shows a changeover sequence of such a known tap changer
- FIG. 3 shows a vacuum switching tube according to the invention
- FIG. 4 shows a tap changer according to the invention with two vacuum switching tubes according to the invention in schematic illustration
- FIG. 5 shows a further tap changer according to the invention.
- a known tap changer is shown in FIG. 1 . It has a first load branch in which a vacuum switching tube MSV a acting as a main contact as well as parallel thereto a switch-over resistance R a and a vacuum switching tube TTV a acting as a resistance contact are present.
- the second load branch comprises a vacuum switching tube MSV b as well as parallel thereto a further switch-over resistance R b and a vacuum switching tube TTV b .
- the known tap changer thus has two vacuum switching cells per load branch, therefore four vacuum switching cells per phase in total.
- FIG. 2 shows the switching sequence of such a known tap changer in the case of changeover from the winding tap n to the winding tap n+1.
- the starting position, in which the tap n is electrically connected, corresponds with the setting of the individual switching elements illustrated in FIG. 1 .
- the changeover takes place in the following steps:
- FIG. 3 shows a combined vacuum switching tube according to the invention.
- a common housing 1 enclosing the entirety of vacuum switching tubes is provided.
- an upper movable plunger 2 and, at the opposite end, a lower fixed contact terminal 3 .
- the movable plunger 2 carries a movable contact member at its inner free end.
- the fixed lower contact terminal 3 carries in its turn a fixed contact member 5 .
- an encircling annular stationary contact arrangement 6 that is disposed perpendicularly to the rotationally symmetrical longitudinal axis S 1 in the plane S 2 that is here illustrated to be horizontal.
- a fixed contact 8 which is, for example, soldered, is fastened to the contact arrangement 6 .
- the is fixed contact 8 is, in an end setting of the movable plunger 2 , electrically connectable by the contact member 4 thereof. In the other end setting this contact member 4 electrically connects the stationary contact member 5 of the lower contact terminal 3 .
- the movable contact member 4 can thus electrically connect, in the manner of a changeover switch, selectably not only the stationary contact 8 , but also the stationary contact member 5 .
- Bellows 7 are illustrated as well as upper and lower ceramic members 9 , 10 , and in the interior of the housing 1 an upper attenuating screen 11 and a lower attenuating screen 12 .
- the vacuum switching tube according to the invention is of simple construction; by contrast to the solutions known from the prior art it needs neither internally disposed contact compression springs nor complicated actuating mechanisms or special cage-like contact constructions.
- FIG. 4 shows, in schematic illustration, a tap changer with two load branches, as has already been explained in FIGS. 1 and 2 .
- the is vacuum switching tube MSV a acting as a main contact, of the first load branch and the vacuum switching tube TTV b acting as a resistance contact, of the second load branch are combined into a first vacuum switching tube V 1 according to the invention.
- the vacuum switching tube MSV a acting as a main contact, of the second load branch and the vacuum switching tube TTV b acting as a resistance contact, of the first load branch are combined into a second vacuum switching tube V 2 according to the invention.
- FIG. 5 shows a further tap changer according to the invention, in which additional mechanical switching elements (MDC a , MDC b ) are provided that serve for electrical insulation of the load branch not conducting the load current.
- MDC a , MDC b additional mechanical switching elements
- the advantage of the invention consists in that only two vacuum switching tubes each with only one movable contact member, which is to be driven, are required in order to replace in total four separate contacts in the two load branches.
Abstract
Description
- The invention relates to a tap changer with vacuum switching tubes for uninterrupted switching over between winding taps of a tapped transformer. The invention further relates to a novel vacuum switching tube particularly suitable for such a tap changer.
- A tap changer having in total four vacuum switching tubes per phase is known from DE 20 21 575. Provided in each of the two load branches are a respective vacuum switching tube as main contact and a respective further vacuum switching tube, in series connection with a switch-over resistance, as resistance contact.
- In the case of uninterrupted load changeover from the previous winding tap n to a new, preselected winding tap n+1 initially the main contact of the side switching off is opened and is thereupon the resistance contact of the side taking over closes so that a compensating current limited by the switch-over resistors flows between the two taps n and n+1. After the previously closed resistance contact of the side switching off has opened, the main contact of the side taking over then closes so that the entire load current is conducted from the new winding tap n+1 to the load diverter; the changeover is concluded.
- A further tap changer in which further mechanical switch elements are additionally provided between the electrical connection of the two vacuum switching tubes of each load branch and the load diverter is described in
DE 10 2009 048 813 that is not prior published. - The known tap changer requires four separate vacuum switching tubes per phase. In the first instance, the large amount of space required for these vacuum switching tubes themselves, as well as the associated actuated mechanism is disadvantageous. Moreover, due to the high component outlay such known constructions are relatively expensive.
- It is the object of the invention to indicate a tap changer which, for the same functionality, is of simpler construction, in which the switching elements need less space and are, in addition, less expensive.
- Moreover, it is an object of the invention to indicate a vacuum switching tube which is usable, with particular advantage, for such a further developed tap changer.
- The tap changer according to the invention is based on the general idea of respectively combining the main contact in one load branch and the resistance contact in the other load branch to form a single vacuum switching tube.
- Moreover, the vacuum switching tube according to the invention is based on the general idea of combining the functionality of two tubes in a tap changer through the combination of a constructional form of a tube with only one movable contact system and two alternative—depending on the type of changeover switch—contactable fixed contacts. In that case, the novel vacuum switching tube is of simple construction; it does not have, in particular, any internally located contact compression springs or slide contacts. Particularly advantageous in the case of the vacuum switching tube according to the invention is the single movable contact system that occupies less space and requires only a simple actuating mechanism.
- Vacuum switching tubes with two contact locations are already known per se.
- DE 333443767 relates to a vacuum switching tube with two contact pairs, which are electrically connected in series, in a single vacuum space, the contact pairs being actuatable simultaneously.
- DE 197 56 308 C1 relates to a similar vacuum switching tube with two switch paths arranged on a common axis, wherein internally disposed contact compression springs are provided.
- EP 0 258 614 B1 describes the combination of a vacuum switching tube and a specific electrical connection with a tap changer. In this case, several switching paths are arranged in one is vacuum space, which causes a complicated construction of the vacuum switching tube with annular fixed contacts.
- Finally, DE 10 2006 033 B3 describes a further vacuum switching tube with a multiple functionality, wherein here, too, not only annular fixed contacts, but also internally disposed contact pressure springs are required.
- None of these known solutions is suitable for a tap changer according to the invention.
- The invention shall be explained in more detail in the following by way of example with reference to drawings, in which:
-
FIG. 1 shows a tap changer according to the prior art, -
FIG. 2 shows a changeover sequence of such a known tap changer, -
FIG. 3 shows a vacuum switching tube according to the invention, -
FIG. 4 shows a tap changer according to the invention with two vacuum switching tubes according to the invention in schematic illustration and -
FIG. 5 shows a further tap changer according to the invention. - A known tap changer is shown in
FIG. 1 . It has a first load branch in which a vacuum switching tube MSVa acting as a main contact as well as parallel thereto a switch-over resistance Ra and a vacuum switching tube TTVa acting as a resistance contact are present. In entirely analogous manner, the second load branch comprises a vacuum switching tube MSVb as well as parallel thereto a further switch-over resistance Rb and a vacuum switching tube TTVb. The known tap changer thus has two vacuum switching cells per load branch, therefore four vacuum switching cells per phase in total. -
FIG. 2 shows the switching sequence of such a known tap changer in the case of changeover from the winding tap n to the winding tap n+1. The starting position, in which the tap n is electrically connected, corresponds with the setting of the individual switching elements illustrated inFIG. 1 . The changeover takes place in the following steps: -
- MSVa opens
- TTVb closes
- TTVa opens
- MSVb closes;
the changeover is concluded.
-
FIG. 3 shows a combined vacuum switching tube according to the invention. In that case acommon housing 1 enclosing the entirety of vacuum switching tubes is provided. Provided centrally in the rotationally symmetrical longitudinal axis s1 is an uppermovable plunger 2 and, at the opposite end, a lower fixed contact terminal 3. Themovable plunger 2 carries a movable contact member at its inner free end. The fixed lower contact terminal 3 carries in its turn a fixed contact member 5. Provided above the movable contact member 4 is an encircling annularstationary contact arrangement 6 that is disposed perpendicularly to the rotationally symmetrical longitudinal axis S1 in the plane S2 that is here illustrated to be horizontal. A fixed contact 8, which is, for example, soldered, is fastened to thecontact arrangement 6. The is fixed contact 8 is, in an end setting of themovable plunger 2, electrically connectable by the contact member 4 thereof. In the other end setting this contact member 4 electrically connects the stationary contact member 5 of the lower contact terminal 3. The movable contact member 4 can thus electrically connect, in the manner of a changeover switch, selectably not only the stationary contact 8, but also the stationary contact member 5. Bellows 7 are illustrated as well as upper and lowerceramic members housing 1 an upper attenuatingscreen 11 and a lower attenuatingscreen 12. - Overall, several advantages are achieved with the tap changer according to the invention with vacuum switching tubes according to the invention: The number of vacuum switching tubes necessary is de facto halved; the need for space for these switching elements is correspondingly smaller. Costs similarly reduce. This is achieved by the vacuum switching tube used in accordance with the invention that is constructed as a ‘tandem tube’ and, in particular, contains two separately switching contacts, but only a single movable contact system.
- In that case, the vacuum switching tube according to the invention is of simple construction; by contrast to the solutions known from the prior art it needs neither internally disposed contact compression springs nor complicated actuating mechanisms or special cage-like contact constructions.
-
FIG. 4 shows, in schematic illustration, a tap changer with two load branches, as has already been explained inFIGS. 1 and 2 . It can be seen that here, according to the invention, the is vacuum switching tube MSVa acting as a main contact, of the first load branch and the vacuum switching tube TTVb acting as a resistance contact, of the second load branch are combined into a first vacuum switching tube V1 according to the invention. Equally, the vacuum switching tube MSVa acting as a main contact, of the second load branch and the vacuum switching tube TTVb acting as a resistance contact, of the first load branch are combined into a second vacuum switching tube V2 according to the invention. - This takes place in that in the case of the first vacuum switching tube V1 according to the invention, for example, the contact path between fixed contact member 5 and movable contact member 4 takes over the function of the MSVa, whilst the contact path between fixed contact 8 and movable contact member 4 takes over the function of the TTVb. In entirely analogous manner in the case of the second vacuum switching tube V2 according to the invention, for example, the contact path between the fixed contact member 5 and movable contact member 4 takes over the function of the MSVb, whilst the contact path between fixed contact 8 and movable contact member 4 takes over the function of the TTVa. Obviously, other electrical connections of the contact paths of the two vacuum switching tubes V1, V2 are also possible within the scope of the invention.
-
FIG. 5 shows a further tap changer according to the invention, in which additional mechanical switching elements (MDCa, MDCb) are provided that serve for electrical insulation of the load branch not conducting the load current. - In all forms of embodiment the advantage of the invention consists in that only two vacuum switching tubes each with only one movable contact member, which is to be driven, are required in order to replace in total four separate contacts in the two load branches.
Claims (4)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010053466 | 2010-11-30 | ||
DE102010053466A DE102010053466A1 (en) | 2010-11-30 | 2010-11-30 | Step switch and vacuum interrupter for such a tap changer |
DE102010053466.8 | 2010-11-30 | ||
PCT/EP2011/005641 WO2012072181A1 (en) | 2010-11-30 | 2011-11-10 | Tap changer and vacuum interrupter for a tap changer of this kind |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140034463A1 true US20140034463A1 (en) | 2014-02-06 |
US9607781B2 US9607781B2 (en) | 2017-03-28 |
Family
ID=44983486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/878,059 Active 2033-05-15 US9607781B2 (en) | 2010-11-30 | 2011-11-10 | Tap changer and vacuum interrupter for a tap changer of this kind |
Country Status (11)
Country | Link |
---|---|
US (1) | US9607781B2 (en) |
EP (1) | EP2647022B1 (en) |
JP (1) | JP2014502049A (en) |
KR (1) | KR20130136997A (en) |
CN (1) | CN103354942A (en) |
BR (1) | BR112013012804A8 (en) |
DE (1) | DE102010053466A1 (en) |
ES (1) | ES2540593T3 (en) |
HK (1) | HK1186288A1 (en) |
PT (1) | PT2647022E (en) |
WO (1) | WO2012072181A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150047954A1 (en) * | 2011-03-25 | 2015-02-19 | Abb Technology Ag | Tap changer |
US20160181024A1 (en) * | 2013-08-27 | 2016-06-23 | Maschinenfabrik Reinhausen Gmbh | On-load tap changer, tap-changing transformer for voltage regulation and method for implementing tap changer in the tap-changing transformer |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2522696A (en) * | 2014-02-03 | 2015-08-05 | Gen Electric | Improvements in or relating to vacuum switching devices |
DE102015106178A1 (en) * | 2015-04-22 | 2016-10-27 | Maschinenfabrik Reinhausen Gmbh | OLTC |
EP3731250B8 (en) | 2019-04-23 | 2022-02-09 | Hitachi Energy Switzerland AG | A spring unit and a diverter switch |
CN112071672B (en) * | 2020-07-22 | 2022-10-04 | 中国电力科学研究院有限公司 | Vacuum on-load tap-changer transition device and switching method of transition device |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3344376A1 (en) * | 1983-12-08 | 1985-06-13 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Vacuum switch |
ES2023856B3 (en) * | 1986-08-06 | 1992-02-16 | Reinhausen Maschf Scheubeck | STAGED CONNECTIONS DEVICE FOR TRANSFORMERS |
DE19756308C1 (en) * | 1997-12-12 | 1999-03-25 | Siemens Ag | Vacuum switch esp. for high-voltage |
DE10030670C2 (en) * | 2000-06-23 | 2002-06-13 | Siemens Ag | Vacuum interrupter with two contact systems |
JP4136421B2 (en) * | 2002-03-29 | 2008-08-20 | 株式会社高岳製作所 | Load tap changer |
JP4112386B2 (en) | 2003-01-29 | 2008-07-02 | 花王株式会社 | Distillation method |
DE10360633A1 (en) * | 2003-12-19 | 2005-07-28 | Abb Technology Ag | Medium-voltage switchgear |
DE112005003757A5 (en) * | 2005-09-12 | 2008-08-14 | Siemens Aktiengesellschaft | Vacuum interrupter |
KR100814514B1 (en) * | 2006-01-27 | 2008-03-17 | 가부시끼가이샤 도시바 | On-load tap changer |
DE102006033422B3 (en) | 2006-07-19 | 2007-11-08 | Maschinenfabrik Reinhausen Gmbh | Vacuum switching tube for load diverter of on-load tap changer, has upper/lower resistance contact plungers axially movable and electrical conductively guided to other plungers, where contact plungers are operated by respective plungers |
FR2927194B1 (en) * | 2008-01-31 | 2010-02-19 | Schneider Electric Ind Sas | VACUUM BULB FOR ELECTRICAL CUTTING APPARATUS PROVIDING AT LEAST DISCONNECT FUNCTION |
FR2940543A1 (en) | 2008-12-18 | 2010-06-25 | Schneider Electric Ind Sas | MEDIUM VOLTAGE POWER DISTRIBUTION CELL |
CN201359915Y (en) * | 2009-03-04 | 2009-12-09 | 上海华明电力设备制造有限公司 | Vacuum tube switch core of on-load tap switch |
CN201430078Y (en) * | 2009-06-12 | 2010-03-24 | 上海华明电力设备制造有限公司 | Changeover mechanism of vacuum on-load tapping switch |
DE202009018524U1 (en) | 2009-10-08 | 2012-01-31 | Maschinenfabrik Reinhausen Gmbh | step switch |
-
2010
- 2010-11-30 DE DE102010053466A patent/DE102010053466A1/en not_active Withdrawn
-
2011
- 2011-11-10 PT PT117825562T patent/PT2647022E/en unknown
- 2011-11-10 ES ES11782556.2T patent/ES2540593T3/en active Active
- 2011-11-10 EP EP11782556.2A patent/EP2647022B1/en active Active
- 2011-11-10 KR KR1020137011895A patent/KR20130136997A/en active Search and Examination
- 2011-11-10 JP JP2013541230A patent/JP2014502049A/en active Pending
- 2011-11-10 WO PCT/EP2011/005641 patent/WO2012072181A1/en active Application Filing
- 2011-11-10 US US13/878,059 patent/US9607781B2/en active Active
- 2011-11-10 CN CN2011800570512A patent/CN103354942A/en active Pending
- 2011-11-10 BR BR112013012804A patent/BR112013012804A8/en not_active IP Right Cessation
-
2013
- 2013-12-06 HK HK13113633.1A patent/HK1186288A1/en not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150047954A1 (en) * | 2011-03-25 | 2015-02-19 | Abb Technology Ag | Tap changer |
US9401249B2 (en) * | 2011-03-25 | 2016-07-26 | Abb Technology Ag | Tap changer |
US20160181024A1 (en) * | 2013-08-27 | 2016-06-23 | Maschinenfabrik Reinhausen Gmbh | On-load tap changer, tap-changing transformer for voltage regulation and method for implementing tap changer in the tap-changing transformer |
JP2016529726A (en) * | 2013-08-27 | 2016-09-23 | マシイネンフアブリーク・ラインハウゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Load tap changer, voltage control tapped transformer, and switching method with tapped transformer |
US9941064B2 (en) * | 2013-08-27 | 2018-04-10 | Maschinenfabrik Reinhausen Gmbh | On-load tap changer, tap-changing transformer for voltage regulation and method for implementing tap changer in the tap-changing transformer |
Also Published As
Publication number | Publication date |
---|---|
PT2647022E (en) | 2015-06-26 |
BR112013012804A2 (en) | 2016-09-13 |
US9607781B2 (en) | 2017-03-28 |
DE102010053466A1 (en) | 2012-05-31 |
CN103354942A (en) | 2013-10-16 |
JP2014502049A (en) | 2014-01-23 |
EP2647022A1 (en) | 2013-10-09 |
WO2012072181A1 (en) | 2012-06-07 |
ES2540593T3 (en) | 2015-07-10 |
HK1186288A1 (en) | 2014-03-07 |
EP2647022B1 (en) | 2015-04-01 |
BR112013012804A8 (en) | 2018-04-03 |
KR20130136997A (en) | 2013-12-13 |
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